From f9365408260010b72d0b2a8f4e60bffd56640209 Mon Sep 17 00:00:00 2001
From: Zachary Capalbo <zach.geek@gmail.com>
Date: Wed, 30 Jun 2021 03:23:52 -0400
Subject: [PATCH] Account for changing morph target count (#20845)

---
 src/renderers/webgl/WebGLMorphtargets.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/renderers/webgl/WebGLMorphtargets.js b/src/renderers/webgl/WebGLMorphtargets.js
index e413281536..a997f02bb5 100644
--- a/src/renderers/webgl/WebGLMorphtargets.js
+++ b/src/renderers/webgl/WebGLMorphtargets.js
@@ -34,7 +34,7 @@ function WebGLMorphtargets( gl ) {
 
 		let influences = influencesList[ geometry.id ];
 
-		if ( influences === undefined ) {
+		if ( influences === undefined || influences.length !== length ) {
 
 			// initialise list
 
-- 
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